The -debug=false removes all the warn/error messages ext-dev produces.

You may see code around that looks like this:

Code:

//<debug>
.... code here
//</debug>

Anything within the //<debug> and //</debug> will be stripped out. I use this in my apps quite a bit to override settings for local dev and the build will automatically remove them for deployment to prod so it's like automation for local dev to prod settings. Also in extensions I built, if say an argument is missing or wrong type I use it to give out warnings so someone would know that they did something wrong (if they look at the console), this is basically what the framework does is if something isn't right it logs/errors out but is wrapped in the debug comments.